Abstract
The central Pacific (CP) zonal wind divergence and convergence indices are defined, and the forming mechanism of CP El Niño (La Niña) events is discussed preliminarily. The results show that the divergence and convergence of the zonal wind anomaly (ZWA) are the key process in the forming of CP El Niño (La Niña) events. A correlation analysis between the central Pacific zonal wind divergence and convergence indices and central Pacific El Niño indices indicates that there is a remarkable lag correlation between them. The central Pacific zonal wind divergence and convergence indices can be used to predict the CP events. Based on these results, a linear regression equation is obtained to predict the CP El Niño (La Niña) events 5 months ahead.
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Foundation item: The National Basic Research Program (973 Program) of China under contract No. 2012CB417402; the Strategic Priority Research Program of the Chinese Academy of Sciences under contract No. XDA11010102.
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Zuo, T., Chen, J. & Wang, H. Impact of the central Pacific zonal wind divergence and convergence on the central Pacific El Niño event. Acta Oceanol. Sin. 33, 85–89 (2014). https://doi.org/10.1007/s13131-014-0497-3
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DOI: https://doi.org/10.1007/s13131-014-0497-3